Whick client should i use?

Hello! could u please inform me about the client i should use? in the page once is mentioned kamael and once hellbound

Please contact me! my e-mail is (between var and nick there is a _ )

Please do not forget it! i used to love this server but now i can't play
i am (was) player Gomenara and there are many friends of mine that want to play this server!

any client above interlude..

l2.exe- Aplication Error

The instruction at "0x7c919925" referenced memory at "ox10fe6f69". The memory could not be "read".

Click on OK to terminate the program
Click on CANCEL to debug the program



This is what it writes when i try to open the program
Could u give me please exact information about what to do?
i install the hellbound client in the G drive, after that i copy the StormPatch_23.8.2008 in the file and i run it , after i do the same with L2Storm__GracialoadingScreens_
and i run the storm updater?

I am really happy to see that the server is still running:D i thought it stopped!

delete retail system and then copy the one from patch... if you dont replace whole folder this happens.. and server will go down soon..